docs: def rename_pool(service, old_name, new_name):
      """
      Rename a Ceph pool from old_name to new_name
      :param service: six.string_types. The Ceph user name to run the command under
      :param old_name: six.string_types
      :param new_name: six.string_types
      :return: None
      """
      validator(value=old_name, valid_type=six.string_types)
      validator(value=new_name, valid_type=six.string_types)
  
      cmd = ['ceph', '--id', service, 'osd', 'pool', 'rename', old_name, new_name]
      check_call(cmd)